Process Overview

Three stages from subscriber assets to ISO capacity.

Nexwatt's architecture maps to the real ISO capacity qualification workflow — asset aggregation, dispatch optimization, and market enrollment.

01

Asset Onboarding & Normalization

Connect your subscriber meter data and DER inventory. Nexwatt supports direct inverter API connections (SolarEdge, SMA, Enphase, Generac PWRcell), MDMS interval data connectors, and a standardized asset metadata schema designed for ISO enrollment filings.

Every asset is validated against ISO telemetry format requirements during onboarding — so compliance gaps are caught before enrollment, not during dispatch testing.

// POST /v1/assets/register
{
  "asset_id": "BTM-00291",
  "type": "solar_storage",
  "inverter": "SolarEdge SE7600",
  "capacity_kw": 7.6,
  "storage_kwh": 9.8,
  "meter_id": "MD-78421-C",
  "iso_zone": "PJM-PEPCO",
  "telemetry_interval": 5
}

// Response
{
  "status": "enrolled",
  "telemetry_validated": true,
  "iso_compliant": true
}
02

Aggregation & Capacity Modeling

Nexwatt builds the aggregated capacity resource model: portfolio-level MW calculation, subscriber churn risk modeling, storage state-of-charge forecasting, and capacity commitment sizing recommendations.

The model runs continuously — updating as subscribers join or leave, seasonal generation changes, and battery storage cycles shift. You always have an accurate picture of how much capacity you can safely commit to an ISO auction.

Capacity model — live
Solar gen
53.7 MW
Storage
7.3 MW
Flex load
3.1 MW
Churn adj.
−7.1 MW
Committable
57 MW
03

ISO Dispatch & Settlement

ISO auction bid submission workflow, real-time dispatch instruction response, settlement data reconciliation, and capacity payment attribution back to subscriber program accounts.

Settlement reports are generated automatically in the ISO's required format. Capacity payments are attributed at the subscriber cohort level — giving program operators the data they need for transparency reporting.

// Dispatch event log
2026-03-12 09:17:00
  DISPATCH_INSTRUCTION_RECEIVED
  resource_id: "NXW-PJM-0042"
  mw_requested: 44.5
  window: "09:15–10:15"

2026-03-12 09:17:03
  ASSETS_DISPATCHED
  count: 312
  mw_confirmed: 44.1

2026-03-12 10:18:22
  SETTLEMENT_REPORT_GENERATED
  status: "filed" ✓
Enrollment Timeline

Typical timeline to first ISO capacity auction

Month 1–2

Asset Onboarding

Connect inverter and meter data, validate telemetry coverage

Month 3–4

Portfolio Modeling

Baseline capacity model, subscriber cohort analysis, commitment sizing

Month 4–6

ISO Enrollment

DER aggregation registration, telemetry testing, dispatch test event

Month 6+

First Auction

Submit capacity offer in next available ISO auction cycle

Start the clock on your ISO enrollment.

Most programs can begin asset onboarding within 2 weeks of a pilot agreement. Talk to our team to assess your program's readiness.

Request Pilot Access